For the curd crescents, mix the lukewarm, soft butter with the flour.
Gradually knead in the curd cheese, lemon juice drops and the egg. Knead everything into a smooth dough and let it cool for 20 minutes.
Then roll out the dough thinly and cut into triangles. Put a mocha spoon of jam under the longer edge and roll into a croissant.
Bake at 190 degrees until the croissants are golden brown.